Variable Speed Drive Circuit Breaker Mounting
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Solution Overview
Problem
Existing control assemblies with variable speed drives and electrical switching devices, such as circuit breakers, are bulky and difficult to access due to the fixed positioning of both components on a common support, leading to space inefficiencies and accessibility issues.
Innovation Solution
A control assembly design where the electrical switching device is fixed directly to the variable speed drive using an L-shaped support part, allowing for different sizes and shapes of circuit breakers to be accommodated, with an interconnection part for electrical connection and screws hidden by the circuit breaker, maintaining a compact width and improving accessibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the circuit breaker is fixed to the same support as the variable speed drive, then both devices can be mounted together, but the assembly becomes bulky and the circuit breaker operating device becomes difficult to access
Solution Approach 1:
The patent combines the circuit breaker and variable speed drive mounting by fixing the circuit breaker directly to the housing of the variable speed drive rather than to a separate support structure. This merging of mounting locations reduces the overall assembly size and improves accessibility of the circuit breaker operating device while still achieving secure mounting of both devices together
Solution Approach 2:
The patent positions the circuit breaker on the front face of the variable speed drive housing, utilizing the frontal dimension rather than stacking devices vertically or horizontally on the same support plane. This dimensional repositioning makes the circuit breaker operating device easily accessible from the front while maintaining compact overall assembly
2Reliability
If the circuit breaker is fixed at a certain distance above or below the drive on the same support, then both devices are secured, but the assembly becomes particularly bulky
Solution Approach 1:
The patent merges the mounting function into a single location by fixing the circuit breaker directly to the variable speed drive housing. This eliminates the need for a separate support structure and reduces the assembly volume while maintaining secure mounting of both devices through their direct connection to each other
Solution Approach 2:
The variable speed drive housing serves multiple functions: it houses the drive electronics and simultaneously serves as the mounting structure for the circuit breaker. This multi-functionality eliminates the need for separate mounting supports, reducing overall assembly volume while ensuring secure fixation of both devices
Data Source
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AI summary
The invention relates to a control assembly consisting of: a variable-speed drive (10) for controlling an electric charge, said variable speed drive including rear attachment means (101) for attaching same to a mounting (30) and a power terminal board receiving a power via power lines; and an electrical interrupter connected to the power lines in order to control or protect the variable-speed drive (10), wherein the electrical interrupter is electrically connected to the power terminal board of the variable-speed drive, and the control assembly includes attachment means for mechanically attaching the electrical interrupter to the variable-speed drive (10) only.